Word Origin & History

swim O.E. swimman "to move in or on the water, float" (class III strong verb; past tense swamm, pp. swummen), from P.Gmc. *swemjanan (cf. O.S., O.H.G. swimman, O.N. svimma, Du. zwemmen, Ger. schwimmen), from PIE base *swem- "to be in motion," sometimes said to be restricted to Gmc., but possible cognates are Welsh chwyf "motion," O.Ir. do-sennaim "I hunt," Lith. sundyti "to chase." For the usual IE word, see natatorium. Sense of "reel or move unsteadily" first recorded 1678; of the head or brain, from 1702. Swimsuit first recorded 1934; swimming hole is from 1867; swimming pool is from 1899. Fig. ...phrase sink or swim is attested from c.1440, often with ref. to ordeals of suspected witches.